Second hand smoke is very much exadurated. The fact is with all the stuff in the world that can hurt you, alchohol, caffine, sacherine, painkillers, car exhausts, dust, etc. second hand smoke just isn't that damaging.
Smoking is actually pleasant, otherwise nobody would spend money on cigars. If sombody wants to make their resteraunt non smoking, that's fine, smokers won't go there. But the Idea of making a law banning smoking in public places, or bars is ridiculous. The only reason stuff like this is passed is that it's the non smokers who make all the noise.